/**
 * Rubik is a for-testing-purposes simple CMS.
 * Copyright (C) 2010 Antonio Hernandez Diaz <ahdiaz@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * $Id: ConnectionFactory.java 8 2010-04-13 19:10:09Z ahdiaz $
 */

package net.ahdiaz.rubik.sedna;

import java.io.File;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;

import net.ahdiaz.rubik.model.conf.RubikConfig;
import ru.ispras.sedna.driver.DatabaseManager;
import ru.ispras.sedna.driver.DriverException;
import ru.ispras.sedna.driver.SednaConnection;

public class ConnectionFactory {

	private static HashSet<SednaConnection> colCnn = new HashSet<SednaConnection>();
	
	private static RubikConfig conf = null;
	
	public static SednaConnection getInstance() throws DriverException {
		
		if (conf == null) {
			try {
				SednaUnmarshaller um = new SednaUnmarshaller(RubikConfig.class);
				Scanner s = new Scanner(new File(System.getProperty("user.dir") + "/resources/conf/rubik.conf.xml"));
				s.useDelimiter("\0");
				conf = (RubikConfig) um.unmarshal(s.next());
			} catch (Exception e) {
				throw new DriverException(e.getMessage(), 0);
			}
		}
		
		SednaConnection conn = DatabaseManager.getConnection(
			conf.getServer().getUrl(),
			conf.getServer().getDbname(),
			conf.getServer().getUser(),
			conf.getServer().getPass()
		);
		colCnn.add(conn);
		return conn;
	}
	
	public static void close(SednaConnection conn) {
		try {
            if (!conn.isClose()) conn.close();
        } catch(DriverException e) {
            e.printStackTrace();
        }
		colCnn.remove(conn);
	}
	
	public static void closeAll() {
		Iterator<SednaConnection> it = colCnn.iterator();
		while (it.hasNext()) {
			SednaConnection conn = it.next();
			try {
	            if (!conn.isClose()) conn.close();
	        } catch(DriverException e) {
	            e.printStackTrace();
	        }
	        conn = null;
		}
		colCnn.clear();
	}
}
